The correct answer is B. Co.
Vitamin B12 is a water-soluble vitamin that is essential for human health. It is involved in many important bodily functions, including the production of red blood cells, the maintenance of nerve function, and the metabolism of carbohydrates, fats, and proteins.
Vitamin B12 is found in animal products, such as meat, fish, poultry, eggs, and dairy products. It is also found in some fortified foods, such as breakfast cereals and nutritional yeast.
Vitamin B12 deficiency can cause a variety of symptoms, including fatigue, weakness, pale skin, nerve damage, and anemia. In severe cases, vitamin B12 deficiency can lead to neurological problems, such as dementia and psychosis.
Vitamin B12 is absorbed in the small intestine. It is then transported to the liver, where it is stored. The body can store enough vitamin B12 for several years, so deficiency is rare in people who eat a balanced diet.
However, vitamin B12 deficiency can occur in people who have certain medical conditions, such as Crohn’s disease or celiac disease. It can also occur in people who have had gastric bypass surgery or who are strict vegetarians or vegans.
If you are at risk for vitamin B12 deficiency, you should talk to your doctor about getting tested. If you are deficient, you will need to take vitamin B12 supplements or injections.
The other options are incorrect because they are not metals. Iron (Fe), magnesium (Mg), and molybdenum (Mo) are all essential minerals, but they are not found in vitamin B12.